20338133 has 2 divisors, whose sum is σ = 20338134. Its totient is φ = 20338132.

The previous prime is 20338111. The next prime is 20338181. The reversal of 20338133 is 33183302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15311569 + 5026564 = 3913^2 + 2242^2 .

It is a cyclic number.

It is not a de Polignac number, because 20338133 - 2¹⁶ = 20272597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20338099 and 20338108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20338333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10169066 + 10169067.

It is an arithmetic number, because the mean of its divisors is an integer number (10169067).

Almost surely, 2^20338133 is an apocalyptic number.

It is an amenable number.

20338133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20338133 is an equidigital number, since it uses as much as digits as its factorization.

20338133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 20338133 is about 4509.7819237741. The cubic root of 20338133 is about 272.9629445159.

The spelling of 20338133 in words is "twenty million, three hundred thirty-eight thousand, one hundred thirty-three".